/* ==========================================================================
   Layout Styles: Grid, Flex, Containers, Sidebar & App Shells
   ========================================================================== */

.container {
    width: 100%;
    max-width: 1380px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 24px;
    padding-right: 24px;
}

.container-fluid {
    width: 100%;
    padding-left: 24px;
    padding-right: 24px;
}

/* App Layout Grid (Sidebar + Main + Right Widgets) */
.app-shell {
    display: flex;
    min-height: 100vh;
    width: 100%;
}

.app-sidebar {
    width: var(--sidebar-width);
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
    display: flex;
    flex-direction: column;
    transition: transform var(--transition-slow), width var(--transition-normal);
    overflow-y: auto;
}

.app-main {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-width: 0;
    min-height: 100vh;
    transition: margin-left var(--transition-normal);
}

.app-topbar {
    height: var(--topbar-height);
    background: var(--bg-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 90;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
}

.app-content {
    flex: 1;
    padding: 28px;
}

/* Dashboard Columns Layout */
.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 28px;
    align-items: start;
}

.main-column {
    display: flex;
    flex-direction: column;
    gap: 28px;
    min-width: 0;
}

.side-column {
    display: flex;
    flex-direction: column;
    gap: 24px;
    position: sticky;
    top: calc(var(--topbar-height) + 28px);
}

/* Public Header (Landing Page) */
.public-header {
    height: var(--topbar-height);
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
}

.public-nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.public-nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
}

.public-nav-links a {
    font-weight: 600;
    color: var(--text-muted);
    transition: color var(--transition-fast);
}

.public-nav-links a:hover,
.public-nav-links a.active {
    color: var(--primary);
}

/* Mobile Bottom Navigation */
.mobile-bottom-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--bottom-nav-height);
    background: var(--bg-surface);
    border-top: 1px solid var(--border-color);
    z-index: 95;
    padding: 6px 12px calc(6px + env(safe-area-inset-bottom));
}

.mobile-nav-items {
    display: flex;
    align-items: center;
    justify-content: space-around;
    height: 100%;
}

.mobile-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    color: var(--text-muted);
    font-size: 11px;
    font-weight: 600;
    transition: color var(--transition-fast);
}

.mobile-nav-item.active {
    color: var(--primary);
}

.mobile-nav-item svg {
    width: 22px;
    height: 22px;
}

/* Sidebar Drawer Overlay (for mobile) */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 99;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.sidebar-overlay.active {
    display: block;
    opacity: 1;
}

/* Global Footer */
.app-footer {
    background: var(--bg-surface);
    border-top: 1px solid var(--border-color);
    padding: 32px 0;
    margin-top: auto;
    color: var(--text-muted);
    font-size: 13px;
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-links {
    display: flex;
    align-items: center;
    gap: 24px;
}

.footer-links a:hover {
    color: var(--primary);
}

.social-links {
    display: flex;
    align-items: center;
    gap: 12px;
}

.social-btn {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: var(--bg-input);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    transition: all var(--transition-fast);
}

.social-btn:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
}